According to the manu-facturer, the ADCH39F firebox provides custom homebuilders with a fireplace that is suitable for rooms with high ceilings that require a narrower fireplace opening. The hearth opening measures 36 in. by 28 in., and the unit features a seamless, herring-bone refractory brick lining on the rear and sidewalls, says the company. The ADCH39F uses the company’s 24-in. vent-free log set arrangements, requiring no chimney or flue, says the manufacturer. Temco Fireplace Products, 301 S. Perimeter Park Dr., Suite 227, Nashville, TN 37211; 615-831-9393; 615-831-9127 (fax); firstname.lastname@example.org (email); temcofireplaces.com (website).